Current File : /home/vacivi36/code/vendor/predis/predis/examples/lua_scripting_abstraction.php
<?php
/*
* This file is part of the Predis package.
*
* (c) Daniele Alessandri <suppakilla@gmail.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
require __DIR__.'/shared.php';
// This example will not work with versions of Redis < 2.6.
//
// Additionally to the EVAL command, the Predis\Command\ScriptCommand class can
// be used to leverage an higher level abstraction for Lua scripting that makes
// scripts appear just like any other command on the client-side. This is basic
// example on how a script-based INCREX command can be defined:
use Predis\Command\ScriptCommand;
class IncrementExistingKeysBy extends ScriptCommand
{
public function getKeysCount()
{
// Tell Predis to use all the arguments but the last one as arguments
// for KEYS. The last one will be used to populate ARGV.
return -1;
}
public function getScript()
{
return <<<LUA
local cmd, insert = redis.call, table.insert
local increment, results = ARGV[1], { }
for idx, key in ipairs(KEYS) do
if cmd('exists', key) == 1 then
insert(results, idx, cmd('incrby', key, increment))
else
insert(results, idx, false)
end
end
return results
LUA;
}
}
$client = new Predis\Client($single_server, array(
'commands' => array(
'increxby' => 'IncrementExistingKeysBy',
),
));
$client->mset('foo', 10, 'foobar', 100);
var_export($client->increxby('foo', 'foofoo', 'foobar', 50));
/*
array (
0 => 60,
1 => NULL,
2 => 150,
)
*/
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